Indirect spot welding welding tong and indirect spot welding device

The invention discloses an indirect spot welding welding tong. The indirect spot welding welding tong comprises a transformer, an electrode, a returning arm, a mounting seat and a driving device for driving the electrode to expand in an electrode axis direction. The transformer is correspondingly and electronically connected with the electrode and the returning arm. The transformer and the drivingdevice are fixedly arranged on the mounting seat. The electrode and the returning arm extend out from the same side of the mounting seat. The farthest elongation distance of the electrode relative tothe mounting seat is greater than the extension distance of the returning arm extending out of the mounting seat. It is unnecessary to separately connect a returning line and a welded plate piece byusing the indirect spot welding welding tong, so that time is saved. 本发明公开了种单面点焊焊钳，该单面点焊焊钳包括所述单面点焊焊钳包括变压器、电极、回流臂、安装座和用于驱动所述电极沿所述电极轴线方伸缩的驱动装置。所述变压器分别与所述电极和所述回流臂电连接，所述变压器与所述驱动装置固定于安装座上，所述电极和所述回流臂从所述安装座的同侧伸出，且所述电极相对于所述安装座的最远伸长距离大于